Ventilator



June 2%, E9338 (3. CHEATER VENTI LATOR Filed July 2, 1951 2 Sheets-Sheet 1 Jame 193:5,

Q. CHEATER VENT ILAT OR Filed July 2. 1951 2 Sheets-"Sheet 2 lgver ror 8. (Cheater Patented June 26, 1933 UNITED STATES PATENT GFFICE VENTILATOR Application filed July 2, 1931, Serial No. 548,318, and in Canada June 30, 1930.

The invention relates to improvements in ventilators and an object of the invention is to provide a novel construction and arrangement of devices for controlling the passage of air through the ventilator and to provide efi'icient and conveniently actuated means for regulating the air controlling devices.

A further object is to provide a ventilator particularly adapted for insertion in the wall of a building, the ventilator embodylng pairs of dampers which can be simultaneously shifted by a conveniently located operating member within the building and which can be regulated to admit. a greater or less amount of air as occasion demands.

A further object is to construct the ventilator so that the dampers are protected from the elements and are not liableto become clogged or frozen up in the wintertime and also to associate with the dampers an exterior box provided with a gate which can be shifted from the interior of the room depending on the direction of the prevailing wind currents.

A further object of the invention is to construct the entire device in a simple, durable and inexpensive manner and so that the same can be installed as a unit structure.

Vith the above more important and other minor objects in view which will become more apparent as the description proceeds, the invention consists essentially in the arrangement and construction of parts hereinafter more particularly described, reference being had to the accompanying drawings, in which Fig. 1 is a vertical sectional View of the complete ventilator as installed in a wall of a building.

Fig. 2 is a horizontal sectional view at 2-2 Figure 1.

Fig. 3 is a vertical sectional view at 33 Figure 2.

Fig. A is a horizontal sectional view at et l Figure 1.

Fig. 5 is a perspective view of a portion of the ventilator, the casings or boxes being torn away to expose interior construction.

Fig. 6 is a perspective view of a portion of the gate or door frame.

Inthe drawingslike characters of reference indicate corresponding parts in the several figures.

The ventilator is designed to be installed in the customary wall 1 of a building and it comprises inner and outer sheet metal boxes or casings 2 and 3, the casing 2 containing the dampers and the casing 3 the gate which latter parts will be fully described hereinafter. The casing 2 is substantially square having a length equal to the thickness of the wall in which it is to be installed. The said casing 2 is provided at its inner and outer ends with vent openings A and 5 bounded by marglnal flanges 6, the inner edges of the flanges being supplied with inturned lips 7.

Centrally at the ends of the casing 2, I locate two similar transversely extending rods or shafts 8 and 9 having the ends thereof suitably mounted in the side walls of the casing and each of these shafts carries a pair of dampers 10 and 11, the dampers being provided on their inner sides adjacent their inner edges with pairs of lugs 12 swivelly supporting the dampers from the shaft. The lugs, shafts and dampers are so arranged in respect to the vent openings that when the dampers are closed, their inner edges butt as best shown in Figure 1 and their outer edges engage the sides of the opening.

Here it will be observed that the dampers are provided with channels 13 adapted to receive the lips 7 and form a break joint in the well known manner. The parts are also arranged so that when the dampers are swung to their open position as shown in dotted outline in Figure 1 and in full outline in Figure 5, they are clear of one another.

Means shortly described is provided for simultaneously opening and closing the pairs of dampers, such being actuated from the interior of the building.

To one of the side walls of the casing 2, I connect pivotally a lever 14 which has one end thereof connected pivotally at 15 to a pair of equal length links 16 and 17 which links are pivotally attached at 18 and 19 to the dampers in the outer end of the casing. A similar pair of equal length links 20 and 21 are pivotally connected to the dampers at the other end of the casing at 22 and said latter links are pivotally attached by a pin 23 to one end of a connecting bar 24 which has the other end pivotally connected at 25 to the lever 14. A bell crank 26 is pivotally attached by a pin 27 to the side wall of the casing 2 and the bell crank has one arm thereof pivotally attached by the pin 23 to the links 21 and 20 and the arm 24. The other arm of the bell crank protrudes through a vertical slot 28 provided at the inner end of the casing 2 and is there provided with suitable means for actuating the same by hand, such herein being shown as a short length wire 29 connected to the bell crank and provided with a pull knob 30.

The arrangement of the various parts is such that when the protruding end of the bell crank is pulled down to its limiting position within the slot, the dampers are closed in the manner best shown in Figure 1 and such that when the bell crank is pulled upwardly to its limiting position at the upper end of the slot, the dampers are fully open appearing at such time as shown in dotted outline in Figure 1 and in full outline in Figure 5. Obviously, the dampers can be opened a greater or less amount by varying the position of the bell. crank in the slot.

The casing 3 hereinbefore mentioned is substantially rectangular and lies in a horizontal position against the outer face of the building wall being carried by the outer end of the casing 2. The ends of the casing 33 are fitted with end screens 31 and 32 which prevent tampering with the internal parts and prevent dust and dirt from getting into the casing but do not prevent the ready passage of air.

It will be observed that the casing 3 is somewhat higher than the casing 2 and that centrally in the upper part of the casing 3, I locate a horizontally disposed plate 33 spaced from and carried by the top of the casing 3. the plate extending from side to side of the said casing and being somewhat longer than the width of the casing 2 and being contained in a horizontal plane somewhat above the horizontal plane containing the top of the casing 2.

Centrally of and adjacent the outer side of the casing 3, I locate a vertically extending pivot shaft or rod 34 on which I pivotally mount vertically disposed gate or door 35 which is adapted to swing towards one end or other of the casing 3. Internal angularly disposed gate or door frames 36 are built up within the casing, these extending angularly between the pivot shaft and the sides of the opening 5, the arrangement being such that when the door is swung to closed position against one of the frames, air will be admitted through one end of the easing 3 to the casing 2 and when swung to its other closed position against the other of the frames, air will be admitted from the other end of the casing 3 to the casing 2.

Means is provided for operating the door or gate from the interior of the building, such embodying a relatively long lever 37 pivotally attached to the top of the casing 2 and having its outer end forked to receive slidably a pin 38 extending upwardly from the upper end of the door. The inner end of the lever projects beyond the inner face of the wall so that one by hand manipulation can swing the lever to pass the door to either of its closed positions. The inner wall of the casing 3 is slotted at 39 to receive the lever and permit of the swinging thereof to its limiting positions.

This device is placed in the wall as shown and when it is desired to ventilate the room, it is only necessary to open the dampers a greater or less amount as wished by manipulating the bell crank. I have found that by employing the exterior casing and gate, I materially enhance the value of the ventilator as the gate can be set with due regard to the prevailing wind currents. If the wind is blowing towards say the lefthand end of the casing 3, the gate will be closed against the frame remote from the left hand end of said casing. The gate then acts as a dcflector to deflect the air currents into the room through the casing 2. Conversely, if the prevailing wind be blowing towards the right hand end of the casing 3, the gate will be set in the reverse position to that just described.

While I have shown the dampers as mounted on horizontal pivot rods or spindles, it will be readily understood that these could be vertical spindles at which time, the operating mechanism associated with the dampers would be carried by the top or bottom wall of the casing instead of by the side wall as shown.

Suitable means can be provided to positively hold the bell crank or the lever 37 in any adjusted position such as notches provided in adjacent parts to receive them but as such an arrangement is well known, I have not considered it necessary to herein show or describe the same in detail. Further sufficient friction could be developed in the pivot joints to hold the various parts in any adjusted position.

What I claim as my invention is 1. The combination with the wall of a building, of a ventilator comprising an open ended casing extending through the wall and providing a vent passage therethrough, cross shafts located centrally at the ends of the casing, a pair of similar dampers pivotally mounted on each cross shaft, said dampers in their closed position closing the ends of the vent passage, an operating lever pivotally carried by one of the walls of the casing, a pair of links connected to one end of the lever and pivotally connected to the pair of dampers at the outer end of the casing, a pair of pivotally connected links, pivotally connected to the other pair of dampers, an operating bar pivotally connecting the latter links to the lever, a. bell crank pivotally carried by one of the walls of the casing and having one end pivotally connected to the latter links and the other end protruding through the end of the casing, the aforesaid connections between the pairs of dampers operating in the manipulation of the bell crank to simultaneously open or close the dampers.

2. The combination with the wall of a building, of an open ended casing passing through the wall of the building and providing a vent passage, dampers mounted in the ends of the casing and adapted when closed to close the ends of the vent passage, means connecting the dampers and operable from the interior of the building to simultaneously close or open the dampers, an exterior horizontally disposed open ended casing communicating centrally with the outer end of the former casing and means operable from the interior of the building for selectively closing the one or the other end of the outer casing depending on the direction of the exterior air currents.

3. The combination with the wall of a building, of an open ended casing passing through the wall of the building and providing a vent passage, dampers mounted in the ends of the casing and adapted when closed to close the ends of the vent passage, means connecting the dampers and operable from the interior of the building to simultaneously close or open the dampers, an exterior hori- Zontally disposed open ended casing communicating centrally with the outer end of the former casing, a deflecting gate mounted centrally within the outer casing for selectively controlling the direction of passage of the exterior air currents through the outer casing to the casing in the wall and means operable from the interior of the building for actuating the gate.

Signed at Winnipeg this 6th day of May CHARLES CHEATER. 

